<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>second</title>
		<style>
			*{
				text-align: center;
				color: red;
			}
		</style>
	</head>

	<body>
		<p class="test" id='num1'>我爱学习</p>
		<p class="test2" id='num2'>学习爱我</p>
		<p class="test" id='num3'>学习CSS</p>
	</body>
</html>